Question

1. simplify: $6(a + b) - 4a$

a. $-2a + 6b$
b. $10a + 2b$
c. $2b - 2a$
d. $2a + 6b$

Explanation:

Step1: Expand the parentheses

$6(a + b) = 6a + 6b$

Step2: Combine like terms

$6a + 6b - 4a = (6a - 4a) + 6b = -2a + 6b$

Answer:

a. $-2a + 6b$